linux-kernel - [PATCH] blk-cgroup: explicitly init the early

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Date:	Tue, 22 Apr 2014 13:26:10 +0800
From:	Jianyu Zhan <nasa4836@...il.com>
To:	axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org, nasa4836@...il.com
Subject: [PATCH] blk-cgroup: explicitly init the early_init field

For a cgroup subsystem who should init early, then it should carefully
take care of the implementation of css_alloc, because it will be called
before mm_init() setup the world.

Luckily we don't, and we better explicitly assign the early_init field
to 0, for document reason.

Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
---
 block/blk-cgroup.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index e4a4145..941bbc8 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -912,6 +912,7 @@ struct cgroup_subsys blkio_cgrp_subsys = {
 	.css_free = blkcg_css_free,
 	.can_attach = blkcg_can_attach,
 	.base_cftypes = blkcg_files,
+	.early_init = 0,
 };
 EXPORT_SYMBOL_GPL(blkio_cgrp_subsys);
 
-- 
2.0.0-rc0

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